Apparently this term was first used by Wade Collins and then David Archuleta on the "iCarly" show. It does not appear in any reputable dictionary. The Urban Dictionary has several suggested definitions, but they only started appearing afterthe "iCarly" episode aired. So, it is whatever the writers of the show wanted it to mean. Whatever it is, it is "gross" and "illegal."
Click on the link below from UrbanDictionary.com for more info.